.demo-page {
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.bigInput{
    width: 95%;
    background-color:#f9f9f9;
    border-radius: 60px;
    padding: 20px;
    margin-top: 10px;
    padding-left: 30px;
}
.bigInput input{width: 100%;padding-left: 15px;}
.demo-page{background-color: red}